Car-truck.



B. SMITH & P. CHRISTENSEN.

GAR TRUCK.

APPLICATION FILED AUG. 12, 1907.

%m m n m 0 e 9 mm 0S 2L 6 in W C H m m 6.6 e m HP E. SMITH & P. CHRISTENSEN CAR TRUGK.

APPLICATION FILED AUfiL 12. 1907.

Patented 0t.20,1908.

3 SHEBTSSHEBT 3.

"In", 1 anunA 1, VENTORS B. \Sm yh P Chr/s fensen A TTOR NE Y.

UNITED STATES PATENT OFFICE.

RICHARD SMITH, OF DENVER, AND PETER CHRISTENSEN, OF FORT LOGAN, COLORADO. a

CARI-TRUCK.

To all whom it may concern:

Be it known that we, Rromnn SMITH and PETER CHRISTENSEN, citizens of the United States of America, residin respectively, at Denver, in the county of. enver and State of Colorado, and at Fort Logan, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Car-Trucks, of which .the following is a specification.

This invention relates to car trucks, and more especially to certain new and useful improvements in; the so-called center-bearing trucks, which are designed to move laterally and around their centers, independent of the car supported thereon.

The objects of our invention are, to provide a truck of the class named, in which.

simplicity of construction is combined with strength and durability, which, by its peculiar construction, promotes the stability of the car body and renders its motion even and equable, and in which the position of the moving parts may be readily adjusted b the application of detachable wearing p ates. We attain these objects. by the mechanism illustrated in the accompanying drawings in tlie various viewsof which, l1ke parts are similarly designated and in which Figure 1 represents a plan view of the truck; Fig. 2, a side elevation thereof; Fig.

3 a transverse section taken along a line 33, Fig. 1. Fig. 4, an enlarged section along a line 44, Fig. 3. F i 5, an enlarged section along a line 5-5, ig. 1. Fig. 6, a section taken along line 6-6, Fig. 5. Fig. 7, a section taken along a line 77, Fig. 1. Fig. 8, a section taken along aline 88, Fig. 7. Fig. 9, a sectional view of the centerplates on'the truck bolster and the car body, in their relative positions, and Fig. 10, a top view of the center-plate on the'truck bolster.

Referring to the drawings, let the reference numeral 10 designate the rectangular truck frame, including the side beams 10*, and the therefrom depending pedestal jaws 11. in between which are arranged the journal boxes 12, which support the extremities of the axles 13 on the wheels 14.

\Vearing plates 15, placed between the sides of the boxes 12 and the jaws, are composed of channel iron, the flanges. 16 of j which engage the inner and outer surfaces of the jaws and protect them against wear Specification of Letter: Patent.

' Application filed August 12, 1907. Serial in. 388,274.

Patented Oct. 20-, 190s.

by contact with adjacent movable parts of the truck. The plates 15 being held in place without the use of bolts or other fastening means, may be readily removed and interchanged with others, in case of wear or breakage.

The truck frame 10, rests upon eight coiled springs 17 and '18, arranged underneath the side beams 10'? and supported upon the equalizers 19, which are suspended from the axle boxes on the outside of the wheels 14. Each equalizer comprises two parallel bars 20 disposed on opposite sides of the pedestals, and which bein secured in spaced relation to each other y means'of a plurality of distance bolts 21, support the transversely dis posed seats 22, which bear the above named springs. Two of the four'springs arranged below each of the side beams 10", designated in the drawings by the numeral 17, are disposed intermediate the two axle boxes, while the outer, shorter ones 18, rest upon extensions 19" of the equalizers 19, beyond the pedestal jaws'and in proximity to the ends of the truck frame. The springs thus arranged, assure an even movement of the truck frame in relation to the two equalizers, and effectually prevent rocking of the carbody, which is supported thereupon through instrumentality of the truck bolster 23. The latter consists of two connected beams24, preferably composed of channel iron and disposed between and in parallel relation to two beams 25, made of angle iron, which being arranged at equal distances from the transverse axis of the frame, connect the parallel side beams 10", below which the equalizers extend.

Four wearing plates 26, provided with offset, outwardly ranging flanges 26, are secured uponv the vertical sides of the bolster, by means of bolts 27 inserted in registering apertures in the said sides and the therewith accessible, and may be removed or renewe in case of wear or breakage.

The truck bolster 23 issecured at its ends, upon two sets of elliptic springs 28, which are fastened upon the subjacent extremities of the so-called sand-board 29. The latter, being composed of channel iron, combines stren th with lightness, and being bent in the f orm of an are, it provides an unobstructed space for the brake-rods and other appliances disposed below the body of the car. The member 29 extending underneath and in parallel relation to the truck bolster, is movably supported at its extreme ends upon the transverse portions 30 of two U shaped hangers or stirrups 30, the upwardly ranging, normally vertical arms 30 of which, extend between the sides of the b lster and the parallel, transverse beams 2 and are pivotally suspended from the latter by means of pins 31, projecting through corresponding apertures in their extremities and supported in boxes 32 which are secured upon the upper surface of the stationary beams.

The movable connection between the extremities of'the sand-board and the subjacent transverse portions of the hangers 30, is established by means of ridged dies 33 secured upon the said portions 30, and which extend in correspondingly formed grooves 34 in blocks 35, which are fixed against the lower surface of the extremities of the member 29 and intermediate the depending flanges of the angle iron of which it is composed.

As the ends of the bolster are spaced from the inner surfaces of the side beams 10 of the truck frame, the former is free to move laterally in constant parallel relation to the upper surface of the latter, by the oscillatory motion of the hangers 30, and the consequent rocking movement of the dies 33, within the recesses 34 when, on rounding curves or by reason of imperfections in the railroad track, the trucks are forced to laterally deviate from its course of travels The car body 36 is ivotally supported upon the truck bolster y means of a pin 37 which passes through vertically alined apertures 38 and 38 in the center plates 39 and 40, respectively secured upon the bolster in central relation thereto and against the floor structure of the car body.

The center plate 39 has a runway' 39, concentric with the aperture 38 which in practice is occupied by a correspondingly formed depending ridge on the superposed plate 40, and is furthermore provided with an internal, annular channel 39concentric with the said runway and connecting with the upper surface of the plate by means of a plurality of vertical passages 39.

The channel is, in raotice, filled with a suitable lubricant, suc [as oil, which is con-' ducted in between the contacting surfaces of the two plates 39 and 40, by wads of cotdrawings.

eoneee As the operation of the various parts comprised in our improved truck, and the advantages derived therefrom, have been referred to at intervals in the course of the description, it will not be necessary to go Having described our invention, what we claim and desire to secure by Letters Patent, is

vl. In a center bearing truck, in combination a truck frame, journal boxes having a vertical movement thereon, equalizers suspended from the said boxes and having longitudinal extensions projecting beyond the same, a truck bolster associated with the said frame to have an oscillatory movement transversely in relation thereto, independent of the equalizers, springs seated upon the latter in engagement with the frame in between the said boxes and springs seated upon the said extensions in engagement with the frame in proximity to its extremities.

2; In a center bearing truck, in combination a truck frame including transverse parallel beams, journal boxes having a vertical movement on the frame, equalizers suspended from the said boxes and having longitudinal extensions projecting beyond the same, springs seated upon the equalizers in engagement with the frame in between the said boxes, springs seated upon the said extensions in engagement with the frame in proximity to its extremities, oscillatory hangers suspended from the said beams, a sand board hingedly supported within the said hangers and a truck bolster supported upon the said board.

3. In a center bearing truck, in combination a truck frame including transverse parallel beams, journal boxes having a vertical movement on the frame, equalizers suspended from the said boxes and having longitudinal extensions projecting beyond the same, springs seated upon the equalizers in enga ement with the frame in between the said oxes, springs seated upon the said extensions in engagement with the frame in proximity to its extremities, oscillatory hangers suspended from the said beams, a sand board hingedly supported within the said hangers, springs upon the said board and a truck bolster supported upon the said springs.

4. In a center bearing truck, the combination with the truck frame having transverse, parallel beams, of a truck bolster movably supported between the latter and a center plate comprisin two superposed members, the lower one 0 which has an internal annular chamber and a plurality of passages connecting the said chamber with the upper surface of the said member and'containlng absorbent material engaging the lower surface of the upper member.

5. In a center-bearing truck, the combinainto further explanation at this point, and

tion with the truck-frame having transverse In testimony whel eof we have aflixed our parallel beams, of oscillatory hangers sus-. signatures in presence of two witnesses. pended from the latter, a. sand-board mov- RICHARD SMITH.

. ably supported within the said hangers and PETER CHRISTENSEN. 5 comprising a channeled plate bent in the Witnessesp form of an arch, and a truck -bo1ster 'sup K. M. STUMP,

ported upon the said board. J OHN ROLLANDET. 

